SL-Class (R231) 2013 on: Discussion on the SL550

SL/R231: power steering problem

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Old Oct 29, 2017 | 10:43 AM
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rbf41000's Avatar
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2014 MB SL 550, 2008 Lamborghini lp640, 2007 MVAgusta 1000, 2008 Aprilia Tuono, 2018 AMG GT Roadster
power steering problem

Wonder if anyone else has seen this?
2014 SL550. 26000 miles
A few times over the last month at full lock when traveling really slow, parking and maneuvering my power steering seems to loose a bit of power when close to full lock, last night I tried to simulate this when standing still by turning from lock to lock. I could make the steering loose power at full lock by turning from lock to lock a few times and it seemed worse the faster I went.
Not checked anything yet but pretty sure the car has electric power steering?
Any thoughts?
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Old Oct 30, 2017 | 04:31 AM
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Shanks’s Pony
I seem to recall that there is some sort of system to prevent damage at full lock....not sure what you mean by "losing power" is it when you turn the wheel in the opposite direction after turning to full lock?
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Old Oct 30, 2017 | 11:44 AM
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2014 MB SL 550, 2008 Lamborghini lp640, 2007 MVAgusta 1000, 2008 Aprilia Tuono, 2018 AMG GT Roadster
Originally Posted by rorywquin
I seem to recall that there is some sort of system to prevent damage at full lock....not sure what you mean by "losing power" is it when you turn the wheel in the opposite direction after turning to full lock?
Thanks for the reply,
What I mean by loosing power is that sometimes at say 3/4 lock you need more force on the steering wheel to finish going to full lock, If I liken it to a hydraulic system with an accumulator it would be like the accumulator is emptying to soon, this is not an every time thing but just occasionally, I can replicate it by turning from lock to lock a few times. Also the manual says if the power steering has a fault you will get a notice on the dash, I do not get a notice.
I wonder it I took it in the dealer they could find a code?
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